The AirTAC GFR400C10LF2GK AirTAC Filter Regulator G3/8 Low-Pressure is a genuine G-series filter regulator: water separation, 40 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has See datasheet ports, a differential-pressure drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR400 series is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This GFR400C10LF2GK is the size 400 unit with a G3/8 (BSPP) port, the low-pressure regulator type, a 40 um standard filter element and the default differential-pressure drain. It includes the embedded square gauge with a psi scale, a fitted reverse/check valve (code K) and a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi); working temperature is -5 to 70 C, non-freezing. The size 400 bowl is polycarbonate (PC); only size 600 uses an aluminium alloy bowl.
This is a genuine AirTAC part. The GFR400 size sits within the G-series filter-regulator range of 200, 300, 400 and 600 bodies covering ports from 1/8 to 1 inch, with options including a 5 um filter element (code W), manual or automatic drains, MPa or bar gauge scales, an external round gauge, NPT threads and a no-bracket version. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and the full datasheet for this model on request.
| Model | GFR400C10LF2GK AirTAC Filter Regulator G3/8 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Standard type |
| Adjusting mechanism | Balanced type |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Drain type | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — factory standard, Factory standard scale |
| Reflux valve | Not fitted |
Specifications follow the official AirTAC G-series air-preparation data. The regulating band is set by the drain type: automatic and differential-pressure drains regulate 0.15 - 0.9 MPa, a manual drain regulates 0.05 - 0.9 MPa. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). Air must not freeze in the unit. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GFR400 | G-series filter regulator, 400 body — sets the port range. |
|---|---|
| C1 | Port size See datasheet. This body offers 10 = PT3/8", 15 = PT1/2". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT thread. PT is the default; G is BSPP and T is NPT. |
| (blank) | No reverse-flow valve (the default). |
Field order is size, port, drain, type, bracket, gauge, shape, scale, grade, thread, reflux — a blank position takes the default. Example: GFR300-08 is a 300 body, PT1/4", differential drain, standard type, bracket included, gauge fitted, 40 µm, PT thread, no reflux valve.
A larger body carries a larger port and holds set pressure better as flow rises. AirTAC publishes flow only as curves, so size the body from your peak demand with headroom. The GFR600 uses an aluminium-alloy bowl; the 200, 300 and 400 bodies use PC.
| This model | GFR400 · See datasheet · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-C1 (two-unit set) |
Filtering and regulating the air feeding low-pressure cylinders and grippers on a carton-forming packaging machine, where the square psi gauge gives operators a local setpoint readout and the check valve holds the circuit during supply dips.
Conditioning air for low-pressure pneumatic valves and sample-handling actuators on laboratory automation benches, with the 40 um element protecting downstream components from water and particulate carried in the shop air line.
Regulating filtered air to low-pressure divert and stop gates on a bottling conveyor, where a single filter-regulator body keeps the gate cylinders supplied with clean, moisture-reduced air at a stable low setting.
Size and port step up in the G-series from 200 to 600, so pick the size whose flow curve covers your demand at your working pressure - we can check the curve against your application before you order. This code is already fixed as size 400, G3/8 thread, low-pressure regulator type, 40 um element, differential-pressure drain, square psi gauge, check valve and bracket. If any of those choices differ for your line, the same body can be ordered with a 5 um element (W), a manual (M) or automatic (A) drain, MPa or bar gauge scales, NPT threads, or without the bracket (J). The L low-pressure type has a reduced setting range that is not published in the catalogue, so confirm the range you need with us before ordering.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
AirTAC publishes G-series flow as curves rather than a single rated figure, so we do not quote a number here. Send us your line pressure, port size and downstream demand and we will confirm the flow and the full datasheet figures for this exact model on request.
L marks the low-pressure regulator type - its exact setting range is not published in the catalogue, so confirm the range you need with us before ordering. F2 means the embedded square gauge is fitted with a psi scale; MPa or bar scales and an external round gauge are order options. K means a reverse/check valve is fitted, so downstream pressure is held if the upstream supply drops.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity, thread type (PT / G / NPT), gauge scale and destination. We confirm price, availability and lead time — usually within 7-8 hours.